JPS5459038A - Magnetic bubble memory device - Google Patents

Magnetic bubble memory device

Info

Publication number
JPS5459038A
JPS5459038A JP12603477A JP12603477A JPS5459038A JP S5459038 A JPS5459038 A JP S5459038A JP 12603477 A JP12603477 A JP 12603477A JP 12603477 A JP12603477 A JP 12603477A JP S5459038 A JPS5459038 A JP S5459038A
Authority
JP
Japan
Prior art keywords
mil
memory
minor loop
magnetic domain
address
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP12603477A
Other languages
Japanese (ja)
Inventor
Shigeki Yamakawa
Sadanobu Ikeda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP12603477A priority Critical patent/JPS5459038A/en
Publication of JPS5459038A publication Critical patent/JPS5459038A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To realize an economical constitution as well as to eliminate the troubles for manufacture and maintenance by providing at least one piece of the substitute minor loop plus the address designating minor loop for a piece of the defective minor loop.
CONSTITUTION: The memory device consists of magnetic bubble memory 1 and its control parts 2W7. Address counter 6 is counted up every time the data within major/minor loop MIL of memory 1 is shifted by one bit and reset when the data has one circulation on major loop MEL. At the same time, the normal or abnormal MIL addressed by counter 6 is stored in memory circuit 7 based on the regularity. Memory 1 comprises MEL.M, magnetic domain generator G, magnetic domain detector S, magnetic domain eraser 7, transfer gate T, MIL.m, data storing MIL ma1Wmal, substitute MILmb1Wmbm, and address disignating MILmc1Wmcm for defective MIL respectively
COPYRIGHT: (C)1979,JPO&Japio
JP12603477A 1977-10-20 1977-10-20 Magnetic bubble memory device Pending JPS5459038A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12603477A JPS5459038A (en) 1977-10-20 1977-10-20 Magnetic bubble memory device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12603477A JPS5459038A (en) 1977-10-20 1977-10-20 Magnetic bubble memory device

Publications (1)

Publication Number Publication Date
JPS5459038A true JPS5459038A (en) 1979-05-12

Family

ID=14925036

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12603477A Pending JPS5459038A (en) 1977-10-20 1977-10-20 Magnetic bubble memory device

Country Status (1)

Country Link
JP (1) JPS5459038A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5651081A (en) * 1979-10-02 1981-05-08 Nec Corp Bubble memory device
JPS5868290A (en) * 1981-10-19 1983-04-23 Fujitsu Ltd Control system of magnetic bubble memory device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5651081A (en) * 1979-10-02 1981-05-08 Nec Corp Bubble memory device
JPS5868290A (en) * 1981-10-19 1983-04-23 Fujitsu Ltd Control system of magnetic bubble memory device
JPS6215950B2 (en) * 1981-10-19 1987-04-09 Fujitsu Ltd

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